I am interested in buying a catheter to use to drain my blat

I am interested in buying a catheter to use to drain my blatter as after I go normally. It seems to dribble out for a bit. or when I am on the road. I am to young to have pads etc. I am looking at using the temp type catheter that I can insert and drain completely but not the type that stays in. I have tried the external but they don't last and most times. I cant use the bag. How do I know what size to order? I am in the usa and am 27 years old. The size of the penis seams normal of 6 1/2 longe. what size will I need to use. I just need the kind that u use and remove. thanks

I would not start using a catheter without seeing your physician. You will need a prescription to get a catheter. It can be harmful to use these types of devices unless it is medically necessary. See your doctor to discuss. You may need some bladder tests if you are not completely emptying your bladder.